Another typical law written by pencil pushers that on a good day, may know which end of the gun a bullet even comes out of. If you began to tell them the ballistics of a modern muzzleloader, their heads would probably spin. Just like the idiots here in Michigan that took so long to finally see that a 44 mag. rifle is no more powerful than a 44 mag. revolver or muzzleloader that was already allowed.
Michigan somewhat copied Indiana in the "limited rifle zone" law. Highly doubt they will follow on this one though.
